MKII Project 300vsLongines HydroConquest
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.
Project 300
HydroConquest
Diameter
41.3mm
43mm
Lug-to-Lug
48mm
lowest
53.5mm
Thickness
13.4mm
11.9mm
lowest
Water Resistance
300m
300m
Power Reserve
n/a
72h
MSRP
$1,995
lowest
$2,000
Movement
ETA 2824-2
Longines L888
Case
5 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the MKII Project 300 for its balanced design, with one owner noting its lume "glows like a torch." Reviewers highlight its high legibility and bold, balanced aesthetic, inspired by classic dive watches. One owner found the 41.25mm case fit their wrist perfectly. Overall, owners and reviewers rate the MKII Project 300 highly for its exceptional lume and well-proportioned dive watch design.
The 39.5mm case size fits most wrists well. The watch offers 200M water resistance. Reviewers did not reach a consensus on any weaknesses or points of disagreement.
Owners widely praise the Longines HYDROCONQUEST for its attractive sunburst dials and near COSC accuracy, with one owner noting a movement losing only about 2 seconds per day. However, opinions are divided on the bracelet, with some finding it comfortable and featuring a useful slide-lock extension, while others criticize it for lacking micro-adjustments, having pinch-prone links, sharp lugs, and an uncomfortable feel. The screw-down crown operation is also a point of contention, described by some as inconvenient or difficult. On balance, owners rate the Longines HYDROCONQUEST highly for its striking dial and value, despite mixed views on its bracelet and crown usability.
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